Ergonomic shaping combines a high backrest, headrest and lumbar support to help keep your shoulders and lower back supported through long gaming or work sessions. The 24 x 21 in frame and 22 x 31.5 in backrest give you room to move while the 90°-135° reclining backrest lets you shift from upright typing to laid-back viewing. An adjustable 19-22.5 in swivel seat helps you find a comfortable desk height. Padded linkage armrests move with the reclining motion to keep your arms supported at different angles. A retractable footrest offers a place to rest your legs, and the 5-claw metal base with 360° casters supports up to 330 lbs for stable, smooth movement.